Jobs Java

• One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
  Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
  Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
  Work supposes close cooperation with Customer team located in Houston and following Agile principles.
  Our team is senior, supportive and friendly.
   

• Responsibilities:

  • Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software
  solutions.
  • Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,
  fault, velocity model, etc.)
  • Present architectural designs and technical proposals to the architecture review board.
  • Ability to break down development tasks and lay out clear implementation roadmaps.
  • Implement and optimize computation algorithms
  • Design and develop both thin and thick client applications that interact with cloud-based microservices.
  • Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools
  • Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.
  • Mentor junior developers and actively contribute to architectural and implementation decisions.
  • Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint
  • Stay current with emerging technologies and trends in geophysical computing and software development.
   

• Mandatory Skills Description:

  6+ years of hands-on Java development experience
  Strong Java Core knowledge
  Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP
  Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones
  Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries
  Solid knowledge of design patterns and software architecture principles
  Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions
  Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)
  Stable career trajectory, no fragmented job history with short tenures

This vacancy requires office attendance in Kyiv

Responsibilities

• Work in SCRUM team 
• Design and develop high-load microservices
• Write high-quality code covered with different levels of tests
• Maintain services on production and assure their stability and performance
• Provide code review for teammates 
• Contribute to the Company’s development processes and practices 

Requirements

• Writing code in a clean and maintainable manner.
• Solid experience with Java 8+ 
• Experience with SQL/NoSQL databases
• Understand microservice architecture patterns.
• Good at Spring framework.
• Experience with REST, messaging systems.
• Ability to cover code by different types of tests.
• Understanding of SOLID principles
• Experience with Git 
• Excellent troubleshooting skills.
• Good communication skills.
• Intermediate+ English

Would be great to have:

• Experience with Kafka, MySQL, Redis, Aerospike.
• Experience with Spring Boot, Spring Cloud
• Experience with Docker, Kubernetes
• Experience in high-load

What we offer:

• International company with several offices in different locations : Tel-Aviv, Kyiv, Warsaw, Limassol.
• Granting an Option;
• A professional environment with great people to work with;
• Competitive salary, performance review;
• Flexible working hours, no one here tracks your work time because our culture is built on trust and cooperation;
• Social and welfare packages;
• 20 working days paid vacation and 100% sick leaves coverage;
• Opportunities to make a difference, to develop and grow;
• Regular corporate celebrations, team buildings and fun activities;
• Comfortable office close to the metro station. Our Kyiv office is open 24/7 with all safety and health measures in place.

• Project Description:

  One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
  Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
  Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
  Work supposes close cooperation with Customer team located in Houston and following Agile principles.
  Our team is senior, supportive and friendly.

• Responsibilities:

  • Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software
  solutions.
  • Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,
  fault, velocity model, etc.)
  • Present architectural designs and technical proposals to the architecture review board.
  • Ability to break down development tasks and lay out clear implementation roadmaps.
  • Implement and optimize computation algorithms
  • Design and develop both thin and thick client applications that interact with cloud-based microservices.
  • Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools
  • Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.
  • Mentor junior developers and actively contribute to architectural and implementation decisions.
  • Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint
  • Stay current with emerging technologies and trends in geophysical computing and software development.

• Mandatory Skills Description:

  6+ years of hands-on Java development experience
  Strong Java Core knowledge
  Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP
  Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones
  Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries
  Solid knowledge of design patterns and software architecture principles
  Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions
  Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)
  Stable career trajectory, no fragmented job history with short tenures

• Nice-to-Have Skills Description:

  C++ development skills
  Practical experience with the Eclipse RCP framework
  OSGi knowledge
  Oil & Gas domain experience

• Languages:
  • English: B2 Upper Intermediate

N-iX is looking for Middle Java Engineer (with Python and JavaScript) to join our team! Our customer is a global marketplace for savings and investments, providing savers with effortless access to high-yield savings accounts and investment options from over 400 partner banks worldwide. It eliminates geographic limitations, ensuring transparency, convenience, and competitive rates. For banks, it offers cost-efficient deposit funding and innovative Banking-as-a-Service solutions. As an experienced Software Engineer, you will support our payments operations and finance teams by customizing and developing new features for the team's two main services: Payments Processing Service and Oracle NetSuite. Additionally, you will contribute to building infrastructure that promotes autonomy across various cross-functional teams.
 

Responsibilities:

• Customize and develop new features for Payments Processing Service and Oracle NetSuite.
• Design, implement, deploy, and maintain services.
• Write and maintain automated tests.
• End-to-end ownership.
• Guiding features from implementation to testing, refinement, and launch. 
• Contributing to CI/CD pipelines and infrastructure supporting team autonomy.
• Participate in an agile, collaborative environment, align technical output with current project requirements, and actively communicate with stakeholders.

Requirements:

• Minimum 3 years of experience in Java.
• Strong proficiency in SQL.
• Experience with JavaScript frameworks or libraries, preferably: Node.js, React or Next.js.
• A strong preference will be shown for candidates possessing at least 1 year of experience in both Python and JavaScript
• Experience in developing and maintaining automated tests.
• Solid understanding of software engineering best practices (coding standards, test coverage, deployment).
• Bachelor’s degree in Engineering or Computer Science.
• Proficiency in spoken and written English.
• Ukrainian language Advanced or higher.

Nice-to-Have Skills:

• Familiarity with Oracle NetSuite (SuiteScript, SuiteTalk, RESTlet).
• AWS Lambda.
• Shell Scripting, .NET technologies.
• CI/CD pipeline setup and maintenance experience.
• Proficiency with AI productivity tools (Cursor, Claude) and openness to work across diverse tech stacks.
• Previous experience within the FinTech sector will be considered a significant advantage.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Project Description:

One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
Work supposes close cooperation with Customer team located in Houston and following Agile principles.
Our team is senior, supportive and friendly.

Responsibilities:

• Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software
solutions.
• Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,
fault, velocity model, etc.)
• Present architectural designs and technical proposals to the architecture review board.
• Ability to break down development tasks and lay out clear implementation roadmaps.
• Implement and optimize computation algorithms
• Design and develop both thin and thick client applications that interact with cloud-based microservices.
• Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools
• Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.
• Mentor junior developers and actively contribute to architectural and implementation decisions.
• Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint
• Stay current with emerging technologies and trends in geophysical computing and software development.

Mandatory Skills Description:

6+ years of hands-on Java development experience
Strong Java Core knowledge
Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP
Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones
Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries
Solid knowledge of design patterns and software architecture principles
Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions
Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)
Stable career trajectory, no fragmented job history with short tenures

Nice-to-Have Skills Description:

C++ development skills
Practical experience with the Eclipse RCP framework
OSGi knowledge
Oil & Gas domain experience

Languages:

English: B2 Upper Intermediate

Are you ready to take your Java expertise to the next level? Join our team to work with a highly scalable, highly available, real-time advertising platform that serves millions of users worldwide and handles massive real-time data at scale. We are hiring a Software Engineer to be a vital part of this mission. If you bring extensive experience building complex systems, love great technology at scale, jumping in, and figuring things out in any system, this role is for you! Working in a modern, cloud-native environment, you’ll collaborate with a team of top engineers to develop low-latency, distributed systems capable of handling millions of QPS. This is an opportunity to combine innovation, performance engineering, and large-scale impact - while shaping the future of digital entertainment technology.
 

About the project

Our client is a leading streaming service based in the United States. With millions of users worldwide, its devices provide easy access to free TV, live news, sports, movies, etc. The client has an advertising business and also licenses its hardware and software to other companies.
 

Who are we looking for?

Skills & Experience

• 4+ years of experience building large scale and low latency distributed systems
• 5+ years of Java backend development experience;
• Solid understanding of algorithms, data structures, performance optimization techniques, object-oriented programming, multi-threading, and real-time programming 
• Experience with distributed caching, SQL/NO SQL, and other databases is a plus 
• Experience with Big Data and cloud services such as AWS/GCP is a plus
• Experience in advertising domain a big plus 
• Self-motivated individual with a high level of accountability and ownership
• Critical thinking and practical decision making
• Can do, results-oriented mindset
• Software development best practices: test-driven development, automated testing;
• Knowledge of distributed systems architecture and service oriented systems;
• English: B2+

Nice to have

• Familiarity with machine learning frameworks (e.g., TensorFlow, PyTorch) and working with large language models (LLMs)

Responsibilities

• Develop and maintain complex backend services
• Collaborate with cross-functional teams (Product, Design, QA) to deliver high-quality features;
• Write unit, integration, and end-to-end tests;
• Maintain and extend existing services to meet new requirements;
• Participate in code reviews and contribute to technical discussions;
• Help maintain technical documentation;
• Assist in improving CI/CD pipelines;
• Contribute to best practices within the development team.

About the project

Israeli agrotech product company is scaling rapidly from 60k to 250k+ users and looking for experienced backend engineers to improve infrastructure scalability and system reliability.

The team is currently focused on scalability challenges, backend optimization, and future AI-ready data collection.

Open Roles

• 1x Team Lead
• 2x Senior Backend Developers

Tech Stack

• Java
• Cassandra
• MySQL → Aurora
• Elasticsearch / OpenSearch

Requirements

• Strong commercial experience with Java backend development
• Experience designing scalable distributed systems
• Experience with high-load infrastructure
• Strong database expertise:
  • Cassandra
  • MySQL/Aurora
• Experience with Elasticsearch/OpenSearch
• Understanding of scalability and performance optimization
• English — B2+

Will be a plus

• Experience with messaging systems
• Experience with WhatsApp/Facebook APIs
• AI/analytics-oriented data architecture experience

Responsibilities

• Improve backend scalability and reliability
• Optimize infrastructure for rapid user growth
• Design scalable backend services
• Work on messaging and communication systems
• Build systems for future AI data analysis
• Collaborate with cross-functional engineering teams

GD Next is a European group of companies, specialising in KYC, Fraud prevention, financial messaging, and Open Banking solutions. We integrate innovative, modern technologies into the traditional financial sector to strengthen digital banking and enhance the customer experience. By combining proven, market-validated technologies with the expertise of our team and trusted partners across Europe, we deliver real and tangible value to our clients.

We are looking for a Junior Java Software Engineer to join our Open Finance project team. This is a great opportunity for aspiring developers who want to gain hands-on experience in financial technology and grow their expertise in Java development.
The role will also include participation in 24/7 project hotline support on a rotational basis for additional compensation.

Key Responsibilities:

• Develop and maintain backend services using Java and relevant frameworks.
• Assist in implementing solutions that align with OpenFinance and PSD2 standards.
• Support the integration of third-party financial institutions and payment service providers (ASPSPs).
• Work closely with senior developers and the customer project team to gather requirements, participate in design discussions, and contribute to the development process.
• Write and maintain clean, efficient, and well-documented code.
• Participate in code reviews to ensure adherence to best practices, security, and performance standards.
• Collaborate with front-end teams for seamless integration between backend and front-end components.
• Develop unit and integration tests to maintain code quality.

• Troubleshoot and debug issues in backend services.

   

Required Skills & Qualifications:

• Basic understanding of Java and hands-on experience in backend development.
• Familiarity with core Java concepts (OOP, multithreading, collections).
• Understanding of RESTful APIs and JSON.
• Knowledge of relational databases (PostgreSQL, MySQL, or similar).
• Experience using Git for version control.
• Basic understanding of web security concepts (OAuth 2.0, JWT, encryption techniques).
• Strong problem-solving skills and willingness to learn new technologies.
• Good communication and teamwork abilities.
• B2 English (Upper-intermediate or higher).

Desired Skills:

• Experience with Spring Framework (Spring Boot, Spring Security).
• Basic knowledge of cloud platforms (AWS, Azure) and containerization (Docker).
• Familiarity with CI/CD tools and deployment practices.
• Exposure to Agile methodologies (Scrum, Kanban).
• Interest in financial technology (FinTech) and willingness to learn OpenFinance and PSD2 regulations.

Additional Information:

• Candidates will have the opportunity to grow within the company and gain exposure to modern financial technologies.
• The role will include participation in 24/7 support on a rotational schedule (1 day on duty / 1 day off duty) for additional compensation.
• This is a great opportunity for junior developers to develop real-world experience in a fast-paced and innovative financial services environment.
• Location: Ukraine.
• The project language is Ukrainian.

Mulesoft Integration Specialist (API & Enterprise Integration)
Locations: Europe, Ukraine

The ideal candidate brings strong experience in enterprise integration initiatives, with a primary focus on MuleSoft-based solutions and API-driven architectures. The background should include participation in platform modernization programs, development and support of complex integration ecosystems, and continuous improvement of enterprise integration landscapes.

Key Role In Integration Programs:

Serves as an integration specialist contributing across multiple phases of integration initiatives, from early discovery and design discussions to implementation, stabilization, and ongoing support.

Regularly collaborates with business analysts, architects, and operations teams to clarify integration requirements, identify risks early, and ensure solutions remain maintainable over time.

Known for taking ownership of integration components and following them through their full lifecycle.

Core Competencies And Expertise:

MuleSoft & API Engineering:

Hands-on experience with MuleSoft Anypoint Platform across a variety of integration use cases

Practical application of API-led architecture to support loosely coupled systems and incremental platform evolution

Development and consumption of RESTful and SOAP-based services

Confident work with JSON and XML payloads, including transformation and validation using DataWeave

Experience enhancing existing integrations through refactoring, improved error handling, and performance tuning

Data, Migration & Backend Systems

Involvement in data migration and data synchronization initiatives as part of broader system transformations

Working knowledge of SQL and relational databases, used for validation, reconciliation, and issue analysis

Experience navigating complex data models and resolving cross-system data inconsistencies

Exposure to integrations involving CRM, ERP, and operational platforms

Collaboration, Communication & Ownership

Regular interaction with business and technology stakeholders to clarify requirements and align expectations

Ability to explain integration concepts in a clear and structured manner to mixed audiences

Strong documentation habits, including integration overviews, API descriptions, and operational notes

Demonstrates a strong sense of responsibility for delivered solutions, particularly during critical releases

Able to remain focused and pragmatic when addressing production issues or time-sensitive requests

Delivery & Ways Of Working:

Comfortable working both independently and as part of distributed Agile teams

Experience adapting to changing priorities while maintaining delivery commitments

Contributes to shared team goals by supporting peers and proactively addressing integration risks
 

Key Achievements:

Contributed to multiple enterprise integration initiatives supporting evolving business processes

Played an active role in stabilizing and improving legacy integrations

Supported data migration and system alignment efforts during platform transitions

Recognized for reliability, ownership, and collaborative approach within integration teams

Technical Environment:

MuleSoft Anypoint Platform, REST, SOAP, API-led Architecture, DataWeave, XML, JSON, SQL, Relational Databases, CloudHub, API Manager, Git, CI/CD tools, Jira, Confluence

Certifications

Salesforce Certified MuleSoft Developer

Dell Boomi Professional API Design (nice to have)

Education:

Bachelor of Science in Systems Engineering

Summary:

Senior MuleSoft Integration Specialist with a broad background in enterprise integration work and API-driven solution delivery. Combines solid MuleSoft expertise with strong collaboration skills and a high level of ownership. Experienced in supporting integration solutions over time, adapting to evolving business needs, and contributing to stable, well-documented integration landscapes.

Location: Remote (Europe)
Experience Level: 5+ years

About the Project
We are looking for a Senior Backend Developer (close to Architect level) to design and build core backend services for the ORA platform. The role is focused on secure cloud integration using KMIP and Barbican, with strong involvement in cryptography, Kubernetes, and open-source technologies.

Key Requirements

Must have:

• Senior-level experience in backend development with Java, Golang, or Python
• Proven hands-on experience in crypto-related projects (clearly visible in CV)
• Strong understanding of cryptography, including TLS and data encryption
• Practical expertise with Kubernetes (infrastructure and management layers)
• Experience working with OpenStack
• Solid background in unit and integration testing
• Experience designing and maintaining distributed systems and core backend services
• English level: Upper-Intermediate / Advanced (C1+)

Nice to have (at least one of):

• Experience with KMIP and key management systems
• Knowledge of Barbican or similar solutions
• Understanding of cloud convergence and ORA architecture
• Experience with microservices scalability and performance optimization
• Familiarity with open standards and open-source integrations

Tech Stack
Java, Golang, Python, Kubernetes, OpenStack, Unit Testing, Integration Testing

Responsibilities

• Design and develop core backend services for ORA
• Integrate with KMS via KMIP (e.g., Barbican, Ceph)
• Build and manage Kubernetes-based infrastructure (CRDs, operators, controllers)
• Implement secure communication using TLS and encryption mechanisms
• Collaborate with architecture and infrastructure teams
• Develop and maintain unit and integration tests
• Participate in architectural decisions and provide technical leadership

One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
Work supposes close cooperation with Customer team located in Houston and following Agile principles.
Our team is senior, supportive and friendly.

• Responsibilities:

  • Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software
  solutions.
  • Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,
  fault, velocity model, etc.)
  • Present architectural designs and technical proposals to the architecture review board.
  • Ability to break down development tasks and lay out clear implementation roadmaps.
  • Implement and optimize computation algorithms
  • Design and develop both thin and thick client applications that interact with cloud-based microservices.
  • Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools
  • Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.
  • Mentor junior developers and actively contribute to architectural and implementation decisions.
  • Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint
  • Stay current with emerging technologies and trends in geophysical computing and software development.

• Mandatory Skills Description:

  6+ years of hands-on Java development experience
  Strong Java Core knowledge
  Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP
  Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones
  Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries
  Solid knowledge of design patterns and software architecture principles
  Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions
  Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)
  Stable career trajectory, no fragmented job history with short tenures

Important: after confirming your application on this platform, you’ll receive an email with the next step: completing your application on our internal site, LaunchPod. So keep an eye on your inbox and don’t miss this step — without it, the process can’t move forward.

Why join us

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :)

About the role

We are looking for a Senior Backend Engineer to lead a critical migration from a monolithic database to multiple domain-specific data stores within Google Cloud Platform. You will design and implement data operations including backfills, data mapping, and Change Data Capture using GCP Datastream and Dataflow, working in Kotlin or Java. The role prioritizes demonstrated expertise in large-scale data migration over specific language fluency.

What you will do

• Drive the migration from a single monolithic database to multiple domain-specific data stores within the Google Cloud Platform;
• Implement solutions for complex data operations, including one-time backfills, data mapping, filtering, and ongoing Change Data Capture to propagate data changes;

• Leverage expertise in GCP technologies, specifically Datastream and Dataflow.

   

Must haves

• 6+ years of professional experience, ideally at a Senior or Lead level;
• Demonstrated deep expertise in data migration;
• Extensive experience with Google Cloud Platform (GCP) data services, especially Datastream and Dataflow;
• Proficiency in a modern programming language, such as Kotlin or Java;
• Upper-intermediate English level.

Nice to haves

• Experience with artificial intelligence (AI) to help optimize data workflows.

The benefits of joining us

• Professional growth

Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps

• Competitive compensation

We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities

• A selection of exciting projects

Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands

• Flextime

Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive.

Meet Our Recruitment Process

Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback:

• Short online form to confirm basic requirements
• 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process.
• 5-minute introduction video

Synchronous stage – Live interviews

• Technical interview with our engineering team (scheduled at your convenience)
• Final interview with your future teammates

If it’s a match — you’ll get an offer!

The Mission

Wallee Group is a leader in advanced payment solutions, dedicated to providing robust, scalable, and secure systems across multiple domains. We enhance customer experiences through innovative payment and finance technology that empowers businesses to grow efficiently. With operations spanning several countries, we thrive on collaboration and agility, utilizing the Scrum framework to drive our international teams. At Wallee, we stay at the forefront of market trends, continuously innovating to deliver premier services to our global customers.

The Role

To achieve our mission of providing the market's best payment experience, Wallee is seeking experienced and versatile java software engineers for our Vilnius office. As disruptors in the payment space, we build industry-leading systems that demand the highest standards of security and reliability. We are constantly pushing our solutions into new territories, and we are looking for engineers who thrive in a fast-paced, agile environment to help us redefine the future of finance.

Tasks

Your Impact

• Architect Scalability: Design and develop highly resilient back-end systems using Java, ensuring our infrastructure handles global scale with ease.
• Feature Innovation: Own the end-to-end lifecycle of new features, from initial implementation to refined bug fixing and performance tuning.
• Collaborative Engineering: Work closely with product managers, UX designers, and QA to translate complex business needs into elegant technical solutions.
• Code Excellence: Drive quality through automated testing, rigorous code reviews, and the creation of clear, maintainable technical documentation.
• Stay Ahead: Continuously research and evaluate emerging technologies and methodologies to keep Wallee at the cutting edge of the fintech industry.

Requirements

What You Bring to the Table

• Technical Depth: Advanced proficiency in Java and core frameworks such as Spring, Spring Boot, and Hibernate.
• Systems Thinking: Proven experience building distributed systems and scalable, high-availability solutions.
• Data Mastery: Strong proficiency in SQL and experience managing complex data structures.
• Modern DevOps: Hands-on experience with CI/CD pipelines (Jenkins/GitLab CI) and containerization (Docker, AWS ECS).
• Agile Mindset: A degree in Computer Science (or equivalent experience) and a track record of thriving in fast-paced, Agile environments.

• Bonus Points: Experience with JavaScript, Apache Camel, or BPM engines.

   

  Benefits:

• You are part of an agile, young international team and shape our products sustainably with your ideas.
• You will play a decisive role in designing products in an omni channel payment start-up and work with leading companies in the financial industry on international projects.
• We offer flexible structures and flat hierarchies.
• Cooperation with motivated colleagues and numerous personal development opportunities.

Our client is a global leader in infrastructure software, specializing in enterprise API management and digital integration.

They are looking for a strong Senior Java Developer to help build and scale a cloud-native platform powering modern API ecosystems.

About the Position:

We are hiring a Senior Java Developer to contribute to the design and development of a high-load, distributed platform focused on API orchestration and integration.

You’ll work on microservices, cloud infrastructure, and platform components, while collaborating with cross-functional teams and mentoring junior engineers.

Working Hours:

Aligned with Ireland timezone (GMT/IST)

Responsibilities:

• Design and develop backend services and APIs using Java
• Build and enhance microservices and platform components (API gateways, data layers)
• Contribute to architecture decisions and system design
• Work within Kubernetes and containerized environments
• Ensure code quality, testing, and best engineering practices
• Collaborate with QA/SDETs on test automation and coverage
• Participate in code reviews and technical discussions
• Monitor system performance using observability tools (Prometheus, Grafana, OpenTelemetry)
• Identify bottlenecks and optimize system performance and scalability
• Mentor junior engineers and support team growth

Requirements:

• 5+ years of experience in backend/platform engineering
• Strong proficiency in Java (mandatory)
• Experience with distributed systems and microservices
• Solid understanding of:
  • Multithreading, memory management, performance tuning
  • API design (REST, gRPC) and integration patterns
• Hands-on experience with:
  • Redis/Valkey, MongoDB, PostgreSQL
  • Kubernetes and containerization
  • Cloud-native environments
• Experience with monitoring & observability tools
• Strong debugging, problem-solving, and communication skills
• Experience working in Agile teams
• Mentoring experience is a plus

Benefits:

• 100% Remote
• Competitive USD compensation
• Flexible working hours
• Home office setup provided
• Work in a global, product-driven environment

Join the team and build scalable systems powering modern digital ecosystems!

We are looking for a motivated individual to join our small team and work on various projects focusing on: e-commerce development and Spring Boot programming.

You will be working closely with the Team Lead, who will also serve as your mentor. He will always be available to assist you and answer your questions, but will also require high-quality and timely execution of tasks.

📝 Key Requirements & Details

• Position: Junior Java Developer (Remote)
• Technologies: Java, Spring Boot, SQL, JPA, MongoDB
• English Level: Intermediate (B1/B2)
• Mandatory Languages: Ukrainian or Russian is required.
• Work Schedule: 10:00 AM – 7:00 PM Kyiv time (EET)
• Location: Remote
• Experience: We are considering candidates with work experience (not necessarily commercial).
• Test Assignment: A mandatory test assignment will be provided after the initial introduction (you will have two days for completion).
• Salary: $500/month, paid twice a month via a convenient method for you (crypto, bank card, or other options).
   

We are interested in long-term cooperation.